CVE-2026-112996 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Loader in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified involves a memory corruption flaw within the loader component of Google Chrome, specifically affecting versions prior to 156.0.8078.47. This defect allows for arbitrary code execution by a remote attacker who can trick a user into visiting a specially crafted HTML page. Although classified with low severity in Chromium's internal security metrics, the potential impact remains significant due to the nature of memory corruption vulnerabilities which often serve as entry points for more severe exploits if sandbox boundaries are breached or bypassed through secondary vectors.
Memory corruption issues typically arise from improper handling of data structures within the application’s runtime environment. In this context, the loader component is responsible for parsing and initializing resources required by web pages. A flaw in how memory is allocated, managed, or freed during this process can lead to conditions such as buffer overflows, use-after-free errors, or heap corruption. When an attacker crafts a malicious HTML page containing specific payloads designed to trigger these faulty code paths, they can manipulate the program's control flow. This manipulation enables the injection and execution of arbitrary machine code within the context of the browser process.
The operational impact centers on the ability of an external actor to compromise the integrity and confidentiality of user data hosted or processed by the browser. By executing arbitrary code inside the sandbox, the attacker gains a foothold in an isolated environment designed to limit damage from untrusted web content. While modern browsers employ robust sandboxing mechanisms that restrict access to critical system resources, successful exploitation can still lead to information disclosure, such as stealing cookies and session tokens, or potentially serve as a stepping stone for further privilege escalation attacks if additional vulnerabilities are present within the same process space or adjacent processes.
This type of vulnerability aligns with Common Weakness Enumeration category CWE-120 Buffer Copy without Checking Size of Input which describes cases where data is copied into a buffer without verifying that it fits, leading to overflow conditions. It also relates to CWE-787 Out-of-bounds Write if the corruption involves writing beyond allocated memory boundaries. From an offensive security perspective, this exploit technique maps to MITRE ATT&CK techniques involving initial access via spearphishing links or drive-by downloads where malicious content is hosted on a compromised website and executed upon user interaction with the browser engine.
Mitigation strategies primarily involve applying the latest software updates provided by Google Chrome developers which patch these memory management flaws within the loader component. Organizations should enforce automated update policies to ensure all client machines are running version 156.0.8078.47 or later. Additionally, implementing application whitelisting and restricting script execution in untrusted zones can reduce the attack surface presented by such crafted HTML pages. Security awareness training for users is also recommended to minimize the risk of interacting with suspicious links that may host these malicious payloads.